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US 4,909,307 AGranted
Regenerative bed heat exchanger
AssigneeCanadian Gas Research Institute
InventorFerdinand K. Besik
Life of this patent
Estimating the term…
Abstract
A heat exchanger has two regenerative beds and two valves connected to the beds for controlling the flow through them. Each valve has two ports connected to the beds and two other ports. The valves are mechanically linked and actuated together. The valves serve to alternate two gas flows between the two beds, to effect heat and moisture transfer between the gas flows. Each valve has two valve members mounted on a common valve shaft controlling the connections between its ports.
Claims25
A regenerative bed heat exchanger for exchanging heat and moisture between opposing gas streams, which comprises:
- first and second regenerative beds, each comprising a bed of material capable of retaining heat and moisture and two inlet/outlet openings providing communication to the bed of material;
- a first valve means having a first port for discharging exhaust gas to the exterior, a second port for incoming fresh air from the exterior, a third port connected to one inlet/outlet opening of the first regenerative bed, a fourth port connected to one inlet/outlet opening of the second regenerative bed, and two first valve members mounted on a common first valve shaft for controlling communication between the ports;
- a second valve means having a first port for exhaust gas, a second port for discharging incoming air, a third port connected to the other inlet/outlet opening of the first regenerative bed, a fourth port connected to the other inlet/outlet opening of the second regenerative bed, and two second valve members mounted on a common second valve shaft for controlling communication betwenn the ports;
- each of the first and second valve shafts and associated valve members being switchable between a first position in which the first port is connected to the third port and the second port is connected to the fourth port, and a second position in which the first port is connected to the fourth port and the second port is connected to the third port;
- and wherein the valve shafts are mechanically linked and actuated together so that the first and second valve means are simultaneously in their first position, in which the first regenerative bed is connected to the first ports of first and second valve means and the second regenerative bed is connected to the second ports of the first and second valve means, and are simultaneously in their second positions in which the first regenerative bed is connected to the second ports of the first and second valve means and the second regenerative bed is connected to the first ports of the first and second valve maans.
2 more elements
Dependencies are inferred from the claim text.